BibFormat: special handling of INSPIRE-PUBLIC type
BibFormat: special handling of INSPIRE-PUBLIC type

* Handles new INSPIRE-PUBLIC document type that denotes public INSPIRE
  documents (used to be empty doctype) in the Files tab visibility
  decider and in the full-text snippet courtesy message generator.

  (Note that this should be make more configurable so that the recipe
  how to generate courtesy messages out of document status, document type,
  or some other document property values are easily customisable.)

* Cherry-picked from 57aa632f4d0b0dd26ee86721c8cad93c08ce018b.

tiborsimko/invenio-search,tiborsimko/invenio-records,tiborsimko/invenio-records,inveniosoftware/invenio-records,inveniosoftware/invenio-records,tiborsimko/invenio-search,inveniosoftware/invenio-search,inveniosoftware/invenio-search